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Garden Pests and Diseases: Holes in my lilac bush leaves

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Forum: Garden Pests and DiseasesReplies: 4, Views: 34
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Schiller Park, IL

June 24, 2012
11:00 AM

Post #9178598

Hello, please help me with information what is eating the leaves of my lilac. Looks like leaf-cutter bees, but I haven't seen any bees around and there is white substance at the edge of the holes that looks like bacteria. I haven't noticed the holes before ( I water the lilac regularly) so it is possible that all the holes appeared within the last couple of days.
thank you in advance!

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July 4, 2012
2:35 PM

Post #9193035

been searching the internet to find an answer to the same question,
my lilac tree is just the !!!!!
Dublin, CA
(Zone 9a)

July 4, 2012
5:49 PM

Post #9193262

The holes do look like leafcutter bees, I wouldn't worry about them. They don't harm plants and are beneficial to have around, and they're also only active chewing leaves for a short period of time while they build their nests. But your leaves also look a little curled & droopy which would not be due to the leafcutters & could indicate a different problem--not sure what though. Can you post some additional pictures of the plant?
Schiller Park, IL

July 7, 2012
8:43 AM

Post #9196443

well, after the rain the white substance disappeared so it seems it is really a leaf cutter bee. As for the curled up leaves - these particular branch is dying, but the rest of the tree is ok. I appreciate that the bees ate the most from the dying branch :)
Dublin, CA
(Zone 9a)

July 7, 2012
3:47 PM

Post #9196978

The white stuff you saw around the edges was probably just a bit of dried up leaf "juice" (for lack of an appropriate botanical word for it) that oozed out a bit when the leaf was chewed.

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